Re: [PHP-DEV] Re: #22527 [Opn->Bgs]: Modulus returned negative value

> Yeah, I read that in the bug report and confirmed that as the intended
> behavior in C.  What I meant was 'regardless of what the ISO standard
> says, thats not a standard mathematical definition.'

    Well, the standard mathematical definition

        r = a mod b <=> a = floor(a/b) * b + r

    for 0 <= r < b applies only, if a, b are members of N
    ("natürliche Zahlen", > 0).  You cannot simply extend it to
    Z.

    As such, it does not apply to the example -27 mod 7, because
    -27 is evidently not part of N.

    - Sascha